Method of designing and manufacturing cam device and three-dimensional design-support computer program for the same

Abstract

There is provided a method of designing and manufacturing a cam device using a three-dimensional design-support computer program including a customer setup program for customers and a manufacture setup program for cam device manufactures being configured to generate different finenesses in 3D models and characteristic values of cam performance as a result of design of the cam device, and being configured to obtain a result which indicates the same cam device except for fineness and the required calculation items when the same parameters are loaded. The customer setup program is lent from the cam device manufacture to the customer, and detailed design to constructional details of the cam device is performed using the manufacture setup program on the basis of design data created using the customer setup program and handed to the cam device manufacturer, whereby the cam device is manufactured on the basis of a detailed design drawing.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a method of designing and manufacturing a cam device used by being mounted on a press die for processing works such as automobile panels, the method being configured to determine the shapes of the cam device according to processing abilities or the like required by customers (users such as automobile manufacturers which are in need of the cam device), and also to a three-dimensional design-support computer program that efficiently supports the design of the cam device.[0003]2. Prior Art[0004]In the prior art, a cam device to be used for a press die (or referred to as “cam unit”) is selected from those presented on catalogues or the like as standard products on the basis of requirements of customers in many cases. However, in the case of the cam devices as the standard products as described above, various factors such as size, an amount of motion, a processing power, a returning power, an...

AI Technical Summary

Benefits of technology

[0006]In view of such problem, it is an object of the invention to develop a three-dimensional design-support computer program for solving the above-described problems, and to provide a method of designing and manufacturing cam devices with improved usage of the computer program.

[0011]According to the invention, the cam device that satisfies desired conditions such as a processing power, a stroke, or the like can be designed easily by the customer in a limited space by using the three-dimensional design-support computer program according to the invention. In addition, on the basis of parameters set by the customer or a 3D model modified by the customer on the basis of these parameters, the shape including constructional details can be automatically achieved by the cam device manufacture without exceeding the size of the 3D model and without falling short of the performance. Therefore, since it is not necessary to repeat exchange of corrected data many times between the customer and the cam device manufacturer, the number of design steps is significantly reduced, which results in a superior advantage such that the design efficiency is dramatically improved.

[0012]Since the cam device manufacturer undertakes the task of manufacturing the cam device under the contract with the customer, the lead time for the manufacture is reduced in conjunction with the improvement of the design efficiency described above. Therefore, the term from order placement to delivery of the cam device is reduced, which significantly improves efficiency of die manufacture from the customers' point of view.

Problems solved by technology

However, in the case of the cam devices as the standard products as described above, various factors such as size, an amount of motion, a processing power, a returning power, and a moment power of the cam device often do not match the customers' requests due to the restrictions of the cam device mounting spaces in the press dies.

However, for example, in the case of three-dimensional design-support software on the basis of a computer program used in design of cam device (CAD: Computer Aided Design or Computer Assisted Drafting, Computer Assisted Drawing), there is no suitable design-support program which contributes to easy designing of the desired cam devices and is capable of designing the cam without leaking the manufacture's design know-how in the relationship between the customers and the manufacturers as matters now stand.

Therefore, repeated exchanges between the customers and the manufactures are necessary to confirm and correct the designed dimensions including details of the cam devices, thereby requiring long time and many steps.

However, the cam device manufacturers side has concern about the leak of the design know-how, so that the software that the manufactures use cannot be handed to the customer as-is.

Images